Florida townships usually have clearly-posted school zones and strict 20 mph speed limits whenever school transportation is active or sometimes whenever school is in session. They almost always have flashing amber signals to indicate the speed zone is active, and there is usually police presence. They really mean 20 mph, not even 1 mph over, and a school zone speeding ticket is big bucks ($240 in our Lady Lake area). However much you may usually drive over the posted limit (yes, often outdated and too low), don't do it in a school zone!